Raypak 207A Betriebsanleitung PDF herunterladen (Seite 41)

The Lo NOx pool heaters are certified and tested

under the ANSI Z21.56/CSA 4.7 Standard for Gas-

Fired Pool Heaters.

The heater should be installed to meet all local codes,

and the latest editions of the National Fuel Gas Code

Z223.1 and the National Electrical Code, ANSI/NFPA

70.

OPERATION

On call for heat, the ignition system, consisting of an

electronic spark module, gas valve and pilot system, is

energized. Providing the pilot is proven, the blower

will start running, the main gas valve will open and the

heater will operate. When the operating control is sat-

isfied the heater will shut down.

START-UP PROCEDURES

1. Turn on power to the heater with gas supply off.

2. Turn on gas supply.

3. Set controller to call for heat.

4. System should start as follows:

a. Spark will turn on, pilot gas valve will open, and

the blower will begin running.

b. Once the blower provides pressure, the main

gas valve will open.

c. Heater will operate until call for heat is satisfied.

deck under cold-start conditions.

After about five min-

utes of operation, the flames should settle down and

blue tips should become visible. Lifting of flames

beyond five minutes would indicate too much combus-

tion air.

VISUAL INSPECTION

Flames can be observed through the opening below

the plenum. Flame color is blue and evenly spread on

the top surface of the burner. At least every three

months a visual inspection should be made of the

burners.

ELECTRICAL

Be sure that electrical service to the heater has prop-

er overload fuse or circuit breaker protection, wire size

and connections which comply with all applicable

codes.

FLAME ROLL-OUT SAFETY SWITCH

Lo NOx heaters are equipped with a thermal cut-off

device to prevent flame roll-out in the event the heat

exchanger becomes blocked. It is a "manual reset"

type roll-out switch that must be reset by a service

technician after any over-temperature conditions have

been fixed. Excessive restriction in the heat exchang-

er flue passage may cause the switch to disable the

heater.

LO NOx POOL HEATERS

NOTE: Door must be in place for proper operation.

Retainer Plug

U.G.

Spring

Gasket

To test the operation of the Unitherm Governor, place

in hot water (over 110°F) and watch for movement

against spring. If there is no movement, replace unit.

Manual Reset Switch

BLOWER ADJUSTMENT

This Lo NOx pool heater is equipped with a combus-

tion air plate (baffle) mounted on the air intake to the

combustion air blower. The baffle has a hole that is uti-

lized to control the air inlet to the blower.

When the combustion air setting is proper, there will be

some lifting of the flames on some areas of the burner

UNITHERM GOVERNOR (U.G.) REPLACEMENT

. Shut water, gas and electricity off, close valves

and relieve pressure.

2. Drain heat exchanger.

3. Remove retainer plug located next to the outlet

ipe connection.

4. Unsnap old U.G. to remove from retainer plug.

Snap in new U.G.

5. Reinstall retainer plug, taking care to lubricate

gasket with a non-petroleum based grease such

as AquaLube.

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 55 56

Kommentare zu diesen Handbüchern

Keine Kommentare

Raypak 207A Betriebsanleitung Seite 41

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Warmwasserbereiter & Kessel Raypak 207A